Double Girder Bridge Crane with Electric Hoist

The crane is made up of several components, including the main girders, end trucks, trolley, and hoist. The main girders are the horizontal beams that support the trolley, while the end trucks contain wheels that enable the crane to travel along the runway. The trolley moves along the bridge and carries the hoist, which does the heavy lifting.

 

One of the main advantages of a double girder electric hoist bridge crane is its high lifting capacity, which can range from 5 to 500 tons depending on the application. This makes it a popular choice for heavy manufacturing, mining, and construction industries where large loads need to be lifted and transported.

 

Other advantages include its ability to cover a larger area than a single girder crane and its relatively low profile, which allows it to be used in buildings with low headroom. Additionally, its electric powered hoist system is often more efficient and easier to maintain than hydraulic systems.

 

Overall, the double girder electric hoist bridge crane is a reliable and versatile lifting solution that can improve productivity and safety in a variety of industrial settings.

• Capacity: 5-1200ton
• Span length: 4-35m
• Lifting height: 6m, 9m, 12m, 18m, 24m, 30m
• Work duty: A4, A5, A6,A7 A8
• Raged voltage: 380V,50Hz,3Phase or as your demands
• Work environment temperature: -28℃～+55℃,
• Crane control mode: Floor control / Remote control / Cabin control

 

 

1. Whole set crane

A Double Girder Electric Hoist Bridge Crane is a type of material handling equipment used in industrial applications to lift and transport heavy loads. The crane consists of two parallel girders supported by a bridge structure spanning the working area. A hoist unit that carries the load is mounted on the bridge and moves horizontally along the length of the girders. The electric hoist is used to lift, lower and move the load across the length and width of the crane's working area. The double girder design provides increased strength and stability for the crane when handling heavy loads, making it ideal for industrial applications where heavy loads need to be lifted and transported over long distances. These cranes are commonly used in industries such as steel mills, paper mills, automotive manufacturing, and construction sites.

 

2. Main girder

The main girder of a Double Girder Electric Hoist Bridge Crane is the primary structural component that spans the gap between the two runways of the crane. It is designed to support the weight of the electric hoist and any load being lifted, as well as any horizontal forces that may be applied during operation. The main girder is typically made of steel and is constructed with a boxed or truss design to provide maximum strength and stability. It is also equipped with trolley rails that allow the electric hoist to move horizontally along the length of the main girder. The main girder is a critical component of the crane system and must be designed, manufactured, and installed to meet strict safety standards and regulations.

 

3. Lifting System

1) A double girder electric hoist bridge crane lifting system consists of a crane that is mounted on two parallel girders that are supported by a trolley. The trolley runs along the length of the girders, allowing the crane to reach any point in the area it is designed to cover. The electric hoist is attached to the trolley and uses a motor to lift and lower loads.

2) The lifting capacity of a double girder electric hoist bridge crane can range from a few tons to several hundred tons depending on the requirements of the application. These types of cranes are commonly used in manufacturing, construction, and shipping industries to lift heavy materials and equipment.

3) The electric hoist is powered by electricity which is supplied by an overhead power source, such as a cable or wire. The hoist operates using controls, which are typically located on a pendant or remote control. These controls allow the operator to move the crane and the hoist in a safe and precise manner.

4) Overall, the double girder electric hoist bridge crane lifting system is a versatile and reliable piece of equipment that can greatly improve the efficiency and productivity of a wide range of industries.

 

4. End Carriages

Double Girder Electric Hoist Bridge Crane End Carriages are the part of a crane that supports the bridge and all of its components. The end carriages consist of two wheels mounted on each side of the bridge girder, and a motor for powering the movement of the crane along the tracks. These end carriages provide support and stability for the crane as it moves along the runway, allowing it to transport heavy loads with precision and accuracy. The electric hoist is mounted on the bridge to lift and lower loads, while the end carriages move the crane from one place to another. Double Girder Electric Hoist Bridge Crane End Carriages can be customized to meet the specific needs of a particular application, including size, weight capacity, and maneuverability.

 

5. Crane traveling mechanism

1) The Double Girder Electric Hoist Bridge Crane Traveling Mechanism refers to the mechanism used to move the bridge of a double girder electric hoist crane along the runway. The traveling mechanism consists of the bridge, the trolley, and the rails.

2) The bridge is the horizontal structure that supports the vertical hoist mechanism and is mounted on two parallel girders or beams that run the length of the crane. The trolley is the mechanism that moves along the bridge and carries the load. The rails provide support and guidance to the traveling mechanism.

3) The double girder electric hoist crane traveling mechanism is powered by an electric motor that drives the trolley and bridge along the rails. The speed of the traveling mechanism can be controlled by a variable frequency drive system and can be adjusted to suit the needs of the application.

4) The double girder electric hoist bridge crane traveling mechanism is commonly used in heavy-duty industrial applications such as construction sites, manufacturing plants, and shipyards, where large loads need to be moved with precision and efficiency.

 

6. Trolley traversing mechanism

1) The Double Girder Electric Hoist Bridge Crane Traveling Mechanism refers to the mechanism used to move the bridge of a double girder electric hoist crane along the runway. The traveling mechanism consists of the bridge, the trolley, and the rails.

2) The bridge is the horizontal structure that supports the vertical hoist mechanism and is mounted on two parallel girders or beams that run the length of the crane. The trolley is the mechanism that moves along the bridge and carries the load. The rails provide support and guidance to the traveling mechanism.

3) The double girder electric hoist crane traveling mechanism is powered by an electric motor that drives the trolley and bridge along the rails. The speed of the traveling mechanism can be controlled by a variable frequency drive system and can be adjusted to suit the needs of the application.

4) The double girder electric hoist bridge crane traveling mechanism is commonly used in heavy-duty industrial applications such as construction sites, manufacturing plants, and shipyards, where large loads need to be moved with precision and efficiency.

 

7. Crane wheel

1) Double girder electric hoist bridge crane wheel refers to the wheels installed on the bridge beam of a double girder electric hoist bridge crane. The crane wheels are responsible for the movement of the bridge beam along the runway rails, allowing the crane to travel horizontally across the working area. These wheels are typically made of forged steel or cast iron, and are designed to withstand the weight of the crane and its load. The wheels are often equipped with bearings or lubrication systems to ensure smooth operation and reduce wear and tear. Proper maintenance and inspection of the crane wheels is essential for safe and efficient operation of the crane.

2) The high quality wheel set is made of 45# steel die forging, roughing, conditioning and finishing. The hardness of heat treatment is HB305 ~ 385, and the hardness of hardening layer at 18mm depth is not less than HB250. The wheel shaft is made of 45# steel, which is roughed, tempered and finished. The hardness of heat treatment is 250 ~ 280HB.

 

8. Crane hook

A crane hook is a device used in lifting operations that attaches to the load being lifted. It is a metal hook that is designed to withstand the weight of the load being lifted, and it is attached to the crane by means of a chain, rope, or cable. The size and strength of the crane hook depend on the type of crane, the weight of the load, and the height of the lift. Crane hooks are made of high-quality steel and can be either single or double hooks. They come in various sizes, shapes, and configurations to accommodate different types of loads and lifting applications.

 

9. Motor

1) The motor used in a double girder electric hoist bridge crane is typically an AC squirrel cage motor. These motors are efficient, reliable, and have a long service life. They are designed to provide smooth and uninterrupted power to the crane, ensuring efficient operation and lifting performance.

2) The motor is typically located in the crane's trolley, which moves along the length of the bridge. It is connected to the hoist mechanism, which raises and lowers the load. The motor drives a gearbox, which in turn drives the hoist drum to lift or lower the load.

3) The motor power rating depends on the crane capacity and working conditions. Higher capacity cranes require more powerful motors to lift heavier loads. Similarly, cranes operating in harsh environments may require motors that are more durable and able to withstand extreme temperatures and humidity levels.

4) Overall, the motor is a critical component in a double girder electric hoist bridge crane, and its proper specification and maintenance are essential for safe and efficient operation.

 

10. Sound and light alarm system and limit switch

Every crane will be equipped a sound and light alarm system and so that it is an effective way to keep people safe in emergency situations. It is important to ensure that the system is regularly tested and maintained to ensure that it is in good working order.

 

The limit switch can be widely used in three - dimensional control and travel limitation of hoisting machinery, and it can protect the crane.

 

11. Control Mode

 

12. Sketch

 

 

Traditional CD MD Hoist Crane
Lifting Capacity	t	5	10	16	20	32
Span	Â	10.5m～31.5m, or customized
Lifting Height	m	6m～24m,or customized
Lifting Speed	m/min	8 or 8/0.8	7 or 7/0.7	3.5 or 0.35/3.5	3.3 or 0.33/3.3	3.3 or 0.33/3.3
Trolley Traveling Speed	m/min	20
Crane Traveling Speed	m/min	30
Work Duty	Â	A4
Power Supply	Â	380V, 50Hz

 

European Standard Electric Hoist Double Girder Overhead Crane
Lifting Capacity	t	5	10	16	20	32	50
Span	m	10.5m～31.5m, or customized
Lifting Height	m	6m～24m, or customized
Lifting Speed	m/min	0.8/5	0.8/5	0.66/4	0.53/3.4	0.8/3.3	0.53/3.2
Trolley Traveling Speed	m/min	2~20
Crane Traveling Speed	m/min	3~30
Work Duty	Â	A5
Power Supply	Â	380V, 50Hz or customized

 

 

1. High Load Capacity: Double girder electric hoist bridges have a high load capacity and can handle heavier loads than single girder systems.

2. Increased Lifting Height: Double girder systems allow for increased lifting height because the hoist is suspended between the two beams, allowing for a greater range of movement.

3. Improved Stability: The double beam construction of the bridge helps to increase stability, providing a more secure platform for lifting heavier loads.

4. Versatility: Double girder electric hoist bridges are versatile and can be used in a variety of applications, including warehouses, factories, and construction sites.

5. Long Lifespan: Double girder systems are built to withstand heavy usage and last for many years, reducing the need for frequent repairs and replacements.

6. Safety: Double girder electric hoist bridges come with safety features like overload protection, emergency stop buttons, and anti-drop devices, making them safer to operate.

 

 

Double girder electric hoists are commonly used in bridge applications, particularly in the construction and maintenance of bridges. They are used to lift and move heavy materials, equipment, and machinery from one location to another. Some of the specific bridge applications for double girder electric hoists include:

 

1. Bridge construction: During the construction of a new bridge, double girder electric hoists are used to lift and move heavy structural components such as beams, girders, and trusses. These hoists are critical for moving large and heavy materials to the appropriate location for installation.

2. Bridge maintenance: Double girder electric hoists are also used during bridge maintenance and repair work. They can be used to lift and move materials, equipment, and machinery needed for maintenance work. This includes items such as cranes, scaffolding, and other support structures.

3. Demolition work: In some cases, bridges need to be demolished or dismantled. Double girder electric hoists can be used to lift and move debris, equipment, and materials during the demolition process.

4. Bridge inspection: Bridges require regular inspections to ensure that they are safe and structurally sound. Double girder electric hoists can be used to lift and move inspectors and equipment to different areas of the bridge for inspection purposes.

 

 

Overall, double girder electric hoists are an important tool for bridge construction, maintenance, and inspection. They enable workers to safely and efficiently move heavy materials, equipment, and machinery, making these tasks both easier and faster.

 

 

 

 

The company has installed an intelligent equipment management platform, and has installed 310 sets (sets) of handling and welding robots. After the completion of the plan, there will be more than 500 sets (sets), and the equipment networking rate will reach 95%. 32 welding lines have been put into use, 50 are planned to be installed, and the automation rate of the entire product line has reached 85%.

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